Search found 337 matches

by michael_l
Wed Oct 04, 2017 7:21 pm
Forum: Cores
Topic: STM32GENERIC, my arduino implementation
Replies: 234
Views: 7446

Re: STM32GENERIC, my arduino implementation

Hi, I wonder if there's support for this small Blue F407VET6 board?

http://stm32duino.com/viewtopic.php?f=3 ... =60#p28309
by michael_l
Wed Jun 28, 2017 6:54 am
Forum: General discussion
Topic: Any FTDI Eve users here?
Replies: 6
Views: 462

Re: Any FTDI Eve users here?

The price definitely is appealing. I wonder there any smaller FT8xx screens like starting from 2.8" or 3.2" with the same price ?
by michael_l
Tue Jun 27, 2017 7:51 pm
Forum: STM32generic
Topic: New library for LCD FT8XX STM32
Replies: 29
Views: 1488

Re: New library for LCD FT8XX STM32

Looks quite nice ! How much FPS can FT8xx displays achieve with STM32F103C8 ? And communications is done via SPI ?
by michael_l
Thu Jun 22, 2017 9:54 am
Forum: Projects
Topic: Need a circuit to detect when engine running from OBD2
Replies: 26
Views: 1062

Re: Need a circuit to detect when engine running from OBD2

About the powering. I just got an idea that I could perhaps make it work with ATTiny85 i.e. DIP-8 version. It is a)very small to fit inside OBD2 connector case b) it has ADC and digital outputs c) it does not consume power like STM32. So I could make a small arduino program that monitors battery vol...
by michael_l
Thu Jun 22, 2017 9:50 am
Forum: STM32F103 Boards
Topic: Error led pin working with BluePill ?
Replies: 6
Views: 374

Re: Error led pin working with BluePill ?

Did you try the Serial 2 error text output ? Re: 1 / 0 umm. Do you mean no crash at all, or an unhandled crash No, didn't try Serial2 yet. Based on the code it triggers only when an 'assert' fails. I mean no crash at all, I was expecting the processor to abort and stop because that's a division by ...
by michael_l
Sun Jun 18, 2017 5:21 pm
Forum: STM32F103 Boards
Topic: Error led pin working with BluePill ?
Replies: 6
Views: 374

Re: Error led pin working with BluePill ?

Yes. I think its that function. BTW. There is also code to send a debug message about the error via the hardware serial, but I have never tested it, so I am not sure if it works. I think it may use Serial2 Yes, this works. It is kinda cool :-) I have blinking led with this line that results in "cra...
by michael_l
Thu Jun 15, 2017 11:31 am
Forum: STM32F103 Boards
Topic: Error led pin working with BluePill ?
Replies: 6
Views: 374

Re: Error led pin working with BluePill ?

Yes, there seems to be a function in util.c 'throb' that gets called when abort occurs with a comment saying it fades the error LED on and off.

I'll report back after I've tested this.
by michael_l
Thu Jun 15, 2017 8:51 am
Forum: STM32F103 Boards
Topic: Error led pin working with BluePill ?
Replies: 6
Views: 374

Error led pin working with BluePill ?

Seems error led pin works with Maple Mini. If my code crashed led starts the fade in/out loop. But this doesn't seem to work with Blue board. Any way to enable it ?
by michael_l
Fri Jun 09, 2017 10:47 am
Forum: Projects
Topic: Need a circuit to detect when engine running from OBD2
Replies: 26
Views: 1062

Re: Need a circuit to detect when engine running from OBD2

Thanks for all the help. I did some more searching and found this one. This is basically what I want and need and it can handle about 200mA. Except that I'll have to reverse the logic so that it turns output HIGH when voltage is over some limit. This 555 most probably won't draw much current when it...
by michael_l
Wed Jun 07, 2017 2:39 pm
Forum: Projects
Topic: Need a circuit to detect when engine running from OBD2
Replies: 26
Views: 1062

Re: Need a circuit to detect when engine running from OBD2

The device will be permanently attached to car. That's why the power consumption has to be minimized and I need an indication when the car is running.
Currently the wire that gets main power +12V will power the display from BP's 5V pin. So it's not enough to just put stm32 to sleep